816460493 has 4 divisors (see below), whose sum is σ = 816559680. Its totient is φ = 816361308.

The previous prime is 816460483. The next prime is 816460499. The reversal of 816460493 is 394064618.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 394064618 = 2 ⋅197032309.

It is a cyclic number.

It is not a de Polignac number, because 816460493 - 2¹² = 816456397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 816460493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816460499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36005 + ... + 54122.

It is an arithmetic number, because the mean of its divisors is an integer number (204139920).

Almost surely, 2^816460493 is an apocalyptic number.

It is an amenable number.

816460493 is a deficient number, since it is larger than the sum of its proper divisors (99187).

816460493 is an equidigital number, since it uses as much as digits as its factorization.

816460493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99186.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 816460493 is about 28573.7728170433. The cubic root of 816460493 is about 934.6414948596.

The spelling of 816460493 in words is "eight hundred sixteen million, four hundred sixty thousand, four hundred ninety-three".